第27题: [单项选择]The reason why the end of the bidding is called "knocking down" is that _________. A. the auctioneer knocks the buyer down B. the buyer knocks the auctioneer down C. the auctioneer knocks the rostrum down D. the auctioneer bangs the table with a small hammer 参考答案:D 答案解析:[解析]这是一道细节题。答案来源于第一段第四句 This is called“knocking down” the goods,for the bidding ends when the auctio